diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index 0a748aa333e..3b371ba7af8 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -2707,6 +2707,8 @@ get_type_name_for_precision_qualifier(const glsl_type *type)
    default:
       unreachable("Unsupported type");
    } /* base type */
+
+   return NULL;
 }
 
 static unsigned